Does this LED want install a ground cable?
If bulb has ground line ,please note that the ground line should also be connected in the lamp .because we are make sure the machine is earthed properly, Proper grounding is required. Periodically check the insulation of every electrical components to prevent possible electric shock and injuries.In generally the user should see two lines on the lamp. :neutral wire and live wire respectively! Along with this lamp. normally ,the high-power led would have connected ground cable through External rectifier(the work voltage of External rectifier is alternating current, the External rectifier with its own ground cable ). when the overloaded security protection.